I guess a 2"ID - 2"OD adapter or two (one on each end) will work....this has got to be the cheapest muffler replacement for the Ranger that there is, strange know one else has done it? I all ready have a hand made muffler strap, as the factory bracket was the first thing to rust off.
Should be an improvement in performance, mileage and tone!
Now to decide on keeping the donut between the cat & muffler, or try to put a straight pipe (adapter?) on....that would probably need to be welded though. My springs, bolts, nuts & brackets are mostly rusted off....I have it tied/twisted together with coat hanger wire. That works pretty good, just give it a twist every year, around inspection time.